64245138 has 8 divisors (see below), whose sum is σ = 128490288. Its totient is φ = 21415044.

The previous prime is 64245119. The next prime is 64245149. The reversal of 64245138 is 83154246.

64245138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

64245138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 64245099 and 64245108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5353756 + ... + 5353767.

It is an arithmetic number, because the mean of its divisors is an integer number (16061286).

Almost surely, 2^64245138 is an apocalyptic number.

64245138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64245138 is a wasteful number, since it uses less digits than its factorization.

64245138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10707528.

The product of its digits is 23040, while the sum is 33.

The square root of 64245138 is about 8015.3064819756. The cubic root of 64245138 is about 400.5100535038.

The spelling of 64245138 in words is "sixty-four million, two hundred forty-five thousand, one hundred thirty-eight".